Patents by Inventor Bao Yang
Bao Yang has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 7654311Abstract: A thermal management system (300) includes a first heat transfer body (330) for providing a opposing heat flux to at least one localized region of elevated heat flux residing in adjacency to a region of lesser flux, such as on a surface (315a) of a circuit die (315) due to a integrated circuit hot-spot (310). A contact (320, 321 962a, 962b, 970a, 970b or 950) defines a thermal conduction path for the opposing flux. A second heat transfer body (350) is in a heat transport relationship with the first heat transfer boy (330) and a second heat transport relationship with the region of lesser heat flux. In such arrangement, each region of heat flux is provided a thermal solution commensurate with the level of heat flux in the region. For example, the opposing heat flux of an active first heat transfer body (330), such as a thermoelectric cooler, may be provided at the hot-spot (310), while at the same time the lesser heat flux is absorbed by a passive second heat transfer body (350), such as a heat spreader.Type: GrantFiled: July 31, 2006Date of Patent: February 2, 2010Assignee: University of MarylandInventors: Bao Yang, Avram Bar-Cohen
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Publication number: 20090159786Abstract: A display apparatus includes: a display panel including a plurality of pixels laid out on the surface of a pixel area of the display panel; and an illumination section configured to generate illumination light in a normal direction perpendicular to the display panel, wherein the illumination section has a light source, a light guiding board, the display panel also includes a plurality of photo sensor devices, the light source includes an invisible light source, the light guiding board includes an invisible light beam reflection section.Type: ApplicationFiled: December 8, 2008Publication date: June 25, 2009Applicant: Sony CorporationInventors: Ying Bao YANG, Masumitsu Ino, Tsutomu Tanaka, Kazunori Yamaguchi, Masaru Higuchi
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Publication number: 20090147353Abstract: A surface emission apparatus includes a first light source for emitting invisible light rays; a second light source for emitting visible light rays; a light guide having a light entrance surface for entering therethrough into the light guide the invisible light rays emitted from the first light source and the visible light rays emitted from the second light source, and a light exit surface for emitting the invisible light rays and the visible light rays therethrough out of the light guide; and a plurality of optical devices disposed on a surface of the light guide which confronts the light exit surface, for scattering more of the invisible light rays than the visible light rays.Type: ApplicationFiled: November 25, 2008Publication date: June 11, 2009Applicant: Sony CorporationInventors: Ying Bao YANG, Masaru Higuchi, Tsutomu Tanaka, Kazunori Yamaguchi, Masumitsu Ino
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Publication number: 20090146967Abstract: Disclosed herein is a display apparatus including a display section; a light radiating section; a plurality of light converging lenses; and a plurality of light receiving devices, wherein the display section includes pixel areas each used for creating a pixel section, and sensor areas each used for creating one of the light receiving devices; the light radiating section outputs light and radiates the output light to the display section from a particular-side surface of the display section; each of the light converging lenses is created in one of the sensor areas each located in the display section and converges light generated by the light radiating section on a focal point inside the display section, passing on the converged light to the other-side surface of the display section; and each of the light receiving devices is created in one of the sensor areas to serve as a device for receiving light which arrives at the other-side surface of the display section as light reflected by a subject of detection.Type: ApplicationFiled: November 14, 2008Publication date: June 11, 2009Applicant: Sony CorporationInventors: Masumitsu INO, Ying Bao Yang, Tsutomu Tanaka, Kazunori Yamaguchi, Masaru Higuchi
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Publication number: 20090135625Abstract: Disclosed herein is a display device including, a visual target, and a backlight adapted to illuminate the visual target from the rear, the backlight including, a plurality of first light sources, second light sources, and a light guide plate, wherein the light guide plate has a plurality of projecting portions on a side surface portion thereof upon which the light, produced by the plurality of first and second light sources is incident, the projecting portions being arranged, along the side surface portion and project toward the one side of the given direction, the plurality of first light sources are disposed to be opposed to the tip surfaces of the plurality of projecting portions, and the second light sources are disposed to be opposed to the bottom surfaces of recessed portions formed between the plurality of projecting portions.Type: ApplicationFiled: November 7, 2008Publication date: May 28, 2009Applicant: Sony CorporationInventors: Ying Bao YANG, Masaru Higuchi, Hiromasa Suzuki, Susumu Kimura
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Patent number: 7290596Abstract: A thermal management system (300) includes a first heat transfer body (330) for providing a opposing heat flux to a localized region of elevated heat flux residing in adjacency to a region of lesser flux, such as on a surface (315a) of a circuit die (315) due to a integrated circuit hot-spot (310). A contact (320 or 321) defines a thermal conduction path for the opposing flux. A second heat transfer body (350) is in a heat transport relationship with the first heat transfer boy (330) and a second heat transport relationship with the region of lesser heat flux. In such arrangement, each region of heat flux is provided a thermal solution commensurate with the level of heat flux in the region. For example, the opposing heat flux of an active first heat transfer body (330), such as a thermoelectric cooler, may be provided at the hot-spot (310), while at the same time the lesser heat flux is absorbed by a passive second heat transfer body (350), such as a heat spreader.Type: GrantFiled: October 20, 2005Date of Patent: November 6, 2007Assignee: University of MarylandInventors: Bao Yang, Avram Bar-Cohen
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Emulsions of heat transfer fluids including nanodroplets to enhance thermal conductivities of fluids
Publication number: 20070120088Abstract: A heat transfer fluid emulsion includes a heat transfer fluid, and liquid droplets dispersed within the heat transfer fluid, where the liquid droplets are substantially immiscible with respect to the heat transfer fluid and have dimensions that are no greater than about 100 nanometers. In addition, the thermal conductivity of the heat transfer fluid emulsion is greater than the thermal conductivity of the heat transfer fluid.Type: ApplicationFiled: October 13, 2006Publication date: May 31, 2007Applicant: UNIVERSITY OF MARYLANDInventors: Bao Yang, Zenghu Han -
Publication number: 20060260793Abstract: A thermal management system (300) includes a first heat transfer body (330) for providing a opposing heat flux to at least one localized region of elevated heat flux residing in adjacency to a region of lesser flux, such as on a surface (315a) of a circuit die (315) due to a integrated circuit hot-spot (310). A contact (320, 321 962a, 962b, 970a, 970b or 950) defines a thermal conduction path for the opposing flux. A second heat transfer body (350) is in a heat transport relationship with the first heat transfer boy (330) and a second heat transport relationship with the region of lesser heat flux. In such arrangement, each region of heat flux is provided a thermal solution commensurate with the level of heat flux in the region. For example, the opposing heat flux of an active first heat transfer body (330), such as a thermoelectric cooler, may be provided at the hot-spot (310), while at the same time the lesser heat flux is absorbed by a passive second heat transfer body (350), such as a heat spreader.Type: ApplicationFiled: July 31, 2006Publication date: November 23, 2006Inventors: Bao Yang, Avram Bar-Cohen
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Publication number: 20060086487Abstract: A thermal management system (300) includes a first heat transfer body (330) for providing a opposing heat flux to a localized region of elevated heat flux residing in adjacency to a region of lesser flux, such as on a surface (315a) of a circuit die (315) due to a integrated circuit hot-spot (310). A contact (320 or 321) defines a thermal conduction path for the opposing flux. A second heat transfer body (350) is in a heat transport relationship with the first heat transfer boy (330) and a second heat transport relationship with the region of lesser heat flux. In such arrangement, each region of heat flux is provided a thermal solution commensurate with the level of heat flux in the region. For example, the opposing heat flux of an active first heat transfer body (330) , such as a thermoelectric cooler, may be provided at the hot-spot (310), while at the same time the lesser heat flux is absorbed by a passive second heat transfer body (350), such as a heat spreader.Type: ApplicationFiled: October 20, 2005Publication date: April 27, 2006Inventors: Bao Yang, Avram Bar-Cohen
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Patent number: 6392624Abstract: Method of driving a liquid crystal display such as a ferroelectric liquid crystal display by multiplex addressing. The display has a pair of bases. A transparent electrode layer and an orientation film are formed in this order on each base. The two bases are placed opposite to each other with a certain gap between them. A ferroelectric liquid crystal material is inserted in the gap. Let Vthlow be the voltage applied when the transmittivity of the liquid crystal material begins to change. Let Vthhigh be the voltage applied when the transmittivity of the liquid crystal material substantially assumes its maximum value. First and second select pulses of opposite polarities are applied to the liquid crystal material. Let Vs1 be the voltage of the first select pulse. Let Vs2 be the voltage of the second select voltage. This method is characterized in that Vs1=±(Vthlow−&Dgr;V), where &Dgr;V>0, and that Vs2=∓(Vthhigh+&Dgr;V), where &Dgr;V>0.Type: GrantFiled: February 8, 1995Date of Patent: May 21, 2002Assignee: Sony CorporationInventors: Ying Bao Yang, Keiichi Nito, Akio Yasuda
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Patent number: 6384887Abstract: A liquid crystal device comprises a pair of substrates and a liquid crystal provided between the paired substrates wherein domains whose threshold voltages are different from one another are finely distributed throughout the liquid crystal. In particular, the respective substrates each has a transparent electrode and an alignment film formed thereon in this order and the substrates are assembled to establish a given space therebetween, and a ferroelectric liquid crystal being injected into the given space wherein domains are finely distributed as set out above, thereby providing a a liquid crystal display device. The fine distribution is such that when a transmittance through inverted domains is 25%, the number of domains (microdomains) having a size of larger than 2 &mgr;m&phgr; in a field of 1 mm2 is not smaller than 300, preferably not smaller than 600, and the width of the threshold voltage within the domains is not smaller than 2 volts within a transmittance range of from 10 to 90%.Type: GrantFiled: October 18, 1999Date of Patent: May 7, 2002Assignee: Sony CorporationInventors: Akio Yasuda, Keiichi Nito, Eriko Matsui, Hidehiko Takanashi, Ying-Bao Yang
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Patent number: 6323919Abstract: A reflection type display having a front light comprises a light guide plate having a light incident portion to which the lights are introduced, a planar surface arranged on the surface facing said first substrate and a prismatic surface arranged on the other surface, said prismatic surface comprising pseudo-planar surfaces which are formed at an angle of approximately 0.5 to 3.5 degrees with said planar surface and are raised greater as being distanced away from said light incident portion and slanted surfaces which are formed at an angle of approximately 40 to 60 degrees with said planar surface and are descended greater as being distanced away from said light incident portion, said pseudo-planar surfaces and said slanted surfaces are arranged alternately to form multiple prisms.Type: GrantFiled: October 1, 1999Date of Patent: November 27, 2001Assignees: Sony Corporation, Stanley Electric Co., Ltd.Inventors: Ying Bao Yang, Osamu Ishige, Yoji Oki
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Patent number: 6317111Abstract: A method of driving a liquid crystal device, which comprises matrix-addressed driving a liquid crystal device comprising a liquid crystal, particularly a ferroelectric liquid crystal, disposed between a pair of substrates and comprising finely distributed domains differing in threshold voltage for use in switching said liquid crystal, said method being a pulse modulation method comprising modulating at least one of pulse voltage and pulse width, a pixel electrode division method, or a time integration method. Also claimed is a liquid crystal device driven by any of said methods. The liquid crystal device provides a further improved analog multiple gray-scale level display, realizes a large-area display at a low cost, and enables drive at full color video rate.Type: GrantFiled: December 2, 1999Date of Patent: November 13, 2001Assignee: Sony CorporationInventors: Keiichi Nito, Akio Yasuda, Hidehiko Takanashi, Ying Bao Yang
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Publication number: 20010022636Abstract: A reflective display device includes a panel, a light guide plate and a light source. The panel is provided with a transparent first substrate lying on the side of the external incident light, a second substrate joined to the first substrate with a predetermined gap therebetween and lying on the reflection side, a guest-host liquid crystal layer held in the gap between the substrates, and electrodes provided on each substrate for applying a voltage to the guest-host liquid crystal layer. The light guide plate is composed of a transparent material and is arranged on the outside of the first substrate. The light source is arranged on the end of the light guide plate and generates illumination light as required. The light guide plate normally transmits external light onto the first substrate and emits the external light reflected from the second substrate, and also, as required, guides illumination light onto the first substrate and emits the illumination light reflected from the second substrate.Type: ApplicationFiled: April 30, 2001Publication date: September 20, 2001Applicant: Sony CorporationInventors: Ying Bao Yang, Tetsuo Urabe, Yukio Kinoshita, Hideo Kataoka, Takayuki Fujioka
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Patent number: 6151089Abstract: A reflection type display device includes a panel, a light guide plate placed external to the panel, and a light source placed at the end of the light guide plate for generating illumination light as required. The light guide plate normally transmits external light onto a first substrate of the panel and emits the external light reflected from a second substrate of the panel, while, as required, guides illumination light onto the first substrate and emits the illumination light reflected from the second substrate. The light guide plate includes a planar section divided into bands and an inclined section lying between each planar section. The light guide plate reflects the illumination light guided from the light source at each inclined section so as to lead it onto the first substrate and emits the illumination light reflected from the second substrate through each planar section and inclined section.Type: GrantFiled: January 20, 1999Date of Patent: November 21, 2000Assignee: Sony CorporationInventors: Ying Bao Yang, Tetsuo Urabe, Yukio Kinoshita, Hideo Kataoka, Takayuki Fujioka
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Patent number: 6108059Abstract: An illumination structure which is for viewing an image in a dark environment without deterioration of image quality in a bright environment is incorporated in a reflective display. A reflective display comprises a panel, a light guide plate, and a light source. The panel is provided with a transparent first substrate located on the incident side of the outside light, a second substrate bonded to the first substrate with interposition of a prescribed space and located on the side opposite to the first substrate, a liquid crystal layer held in the space between both substrates, and an electrode for applying a voltage to the liquid crystal layer. The light guide plate is placed on the outside of the first substrate. The light source is located on the end of the light guide plate, and emits the illumination light as required. The light guide plate allows the outside light to be transmitted, which is incident on the first substrate, and allows the outside light reflected on the second substrate to come out.Type: GrantFiled: March 8, 1999Date of Patent: August 22, 2000Assignee: Sony CorporationInventor: Ying Bao Yang
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Patent number: 6016133Abstract: A method of driving a liquid crystal device, which comprises matrix-addressed driving a liquid crystal device comprising a liquid crystal, particularly a ferroelectric liquid crystal, disposed between a pair of substrates and comprising finely distributed domains differing in threshold voltage for use in switching said liquid crystal, said method being a pulse modulation method comprising modulating at least one of pulse voltage and pulse width, a pixel electrode division method, or a time integration method. Also claimed is a liquid crystal device driven by any of said methods. The liquid crystal device provides a further improved analog multiple gray-scale level display, realizes a large-area display at a low cost, and enables drive at full color video rate.Type: GrantFiled: November 23, 1994Date of Patent: January 18, 2000Assignee: Sony CorporationInventors: Keiichi Nito, Akio Yasuda, Hidehiko Takanashi, Ying Bao Yang
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Patent number: 5926242Abstract: A reflective guest-host liquid-crystal display includes: a pair of upper and lower substrates joined together with a predetermined space therebetween; and a guest-host liquid-crystal layer which is held within the space and contains a dichroic dye. The upper substrate is provided with at least a counter electrode. At least thin-film transistors (TFTs), a reflective layer, a .lambda./4 phase shifter (quarter-wavelength plate), and pixel electrodes are formed on the lower substrate. The .lambda./4 phase shifter is formed above the TFTs and the reflective layer, and has contact holes connecting to the drain electrodes of the TFTs. The pixel electrodes are patterned on the .lambda./4 phase shifter and connected to the corresponding drain electrodes of the TFTs through the corresponding contact holes.Type: GrantFiled: July 14, 1997Date of Patent: July 20, 1999Assignee: Sony CorporationInventors: Hideo Kataoka, Ying Bao Yang, Nobuyuki Shigeno, Tetsuo Urabe, Masaki Munakata